stock 360 magnum block with half fill, stock main caps, hughes main stud girdle since 2005. No issues but didn't start making over 500whp with it till 2010. many 200 shot bottle pass' just went 9.262 @ 145 letting off the nitrous at 3200lbs. race weight guesstimate of 800whp and turning 8000 rpm. Could reuse the main bearings a THIRD time. Last time I reused them from 2012 when I put my Indy 360-1 cnc heads on the motor.